\begin{tabular*}{1.7\textwidth}{l@{\extracolsep{\fill}}*{8}{c}}
\toprule
& \multicolumn{1}{c}{\textbf{OVERALL}} & \multicolumn{4}{c}{\textbf{WORK}} & \multicolumn{3}{c}{\textbf{WELL-BEING}}\\
\cmidrule(lr){2-2}\cmidrule(lr){3-6}\cmidrule(lr){7-9} & \textbf{Index} & \textbf{Earnings} & Productivity & Labor Supply & Output  & \textbf{Index} & Physical & Mental \\
 & (1) & (2) & (3) & (4) & (5) & (6) & (7) & (8) \\
\midrule
\textbf{Devices+Encouragement Only} & \textbf{0.00} & \textbf{-0.07} & -0.02 & -0.06 & -0.07  & \textbf{0.13} & 0.16 & 0.02 \\
& \{1.00\} & \{0.03\} & \{0.43\} & \{0.10\} & \{0.02\}  & \{0.01\} & \{0.01\} & \{0.79\} \\
& & [0.11] & [0.44] & [0.19] & [0.06] & [0.04] & [0.02] & [0.79] \\
\addlinespace
\textbf{Devices+Incentives Only} & \textbf{-0.05} & \textbf{-0.07} & -0.02 & -0.08 & -0.08  &  \textbf{0.05} & 0.08 & -0.02 \\
 & \{0.49\} & \{0.05\} & \{0.57\} & \{0.05\} & \{0.02\}  & \{0.34\} & \{0.23\} & \{0.80\} \\
& & [0.21] & [0.57] & [0.10] & [0.05] & [0.69] & [0.39] & [0.80] \\
\addlinespace
\textbf{Nap Only} & \textbf{0.11} & \textbf{-0.07} & -0.01 & -0.07 & -0.05  & \textbf{0.18} & 0.16 & 0.19 \\
& \{0.11\} & \{0.10\} & \{0.65\} & \{0.07\} & \{0.18\} & \{0.00\} & \{0.01\} & \{0.05\} \\
& & [0.29] & [0.66] & [0.17] & [0.28] & [0.01] & [0.02] & [0.05] \\
\addlinespace
\textbf{Devices+Encouragement and Nap} & \textbf{0.13} & \textbf{-0.07} & 0.04 & -0.15 & -0.04  & \textbf{0.13} & 0.11 & 0.11 \\
 & \{0.05\} & \{0.07\} & \{0.15\} & \{0.00\} & \{0.19\}  & \{0.01\} & \{0.07\} & \{0.21\} \\
& & [0.22] & [0.20] & [0.00] & [0.20] & [0.03] & [0.10] & [0.22] \\
\addlinespace
\textbf{Devices+Incentives and Nap} & \textbf{0.08} & \textbf{-0.07} & 0.04 & -0.17 & -0.07  & \textbf{0.10} & 0.11 & 0.07 \\
 & \{0.19\} & \{0.05\} & \{0.10\} & \{0.00\} & \{0.04\}  & \{0.04\} & \{0.09\} & \{0.46\} \\
 & & [0.11] & [0.12] & [0.00] & [0.08] & [0.11] & [0.12] & [0.45] \\
\addlinespace
\midrule
Participants & 451 & 451  & 451 & 451 & 451  & 452 & 452 & 452 \\
\end{tabular*}
